International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 03 | Mar 2025
p-ISSN: 2395-0072
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PARAMETRIC ANALYSIS OF ECC AND UHPC FILLED DOUBLE STEEL TUBULAR COMPOSITE COLUMNS USING ANSYS B V Mathew1, Kripa K M2, Shifana K3, Viswetha V4, Binu K U5, Geethu G6 1 Head of the Dept., Dept. of Civil Engineering, Ahalia School of Engineering and Technology, Kerala, India.
2Assistant Professor, Dept. of Civil Engineering, Ahalia School of Engineering and Technology, Kerala, India. 3UG Scholar, Dept. of Civil Engineering, Ahalia School of Engineering and Technology, Kerala, India. 4UG Scholar, Dept. of Civil Engineering, Ahalia School of Engineering and Technology, Kerala, India.
5UG Scholar, Dept. of Civil Engineering, Ahalia School of Engineering and Technology, Kerala, India. 6UG Scholar, Dept. of Civil Engineering, Ahalia School of Engineering and Technology, Kerala, India.
---------------------------------------------------------------------***--------------------------------------------------------------------crucial research area in structural engineering. These Abstract
columns, consisting of inner and outer steel tubes filled with ECC between the steel tubes and UHPC in the core, offer superior load-bearing capacity, ductility, and durability, making them ideal for high-rise buildings, bridges, and heavy-load structures. The unique material combination of ECC and UHPC enhances the column's overall performance by providing high compressive strength, crack resistance, and energy absorption.
The study on the Parametric Analysis of Engineered Cementitious Composite (ECC) and Ultra-HighPerformance Concrete (UHPC) Filled Double Steel Tubular Composite Columns explores the structural performance of these advanced composite columns under axial compression and varying parametric conditions. Double steel tubular composite columns, widely used in high-rise and heavy-load structures, exhibit superior strength and durability when filled with ECC and UHPC due to their high ductility, impact resistance, and crack control properties. This research employs finite element modelling to analyse the effects of key parameters such as steel tube thickness, steel tube diameter, slenderness ratio, and material properties on load-bearing capacity, deformation behaviour, and energy absorption.
In this study, stiffeners are introduced to further improve structural stability. These stiffeners are incorporated within the double steel tubular columns to prevent local buckling, enhance load transfer, and optimize overall strength. The research involves a detailed parametric analysis using finite element modelling, investigating variables such as steel tube thickness, steel tube diameter, slenderness ratio, stiffener configurations, and material properties to optimize the structural behaviour under axial and eccentric loading conditions.
Additionally, the study incorporates stiffeners—vertical, circular, and diagonal—within the composite columns to enhance strength, prevent local buckling, and improve load-carrying efficiency. Stiffeners contribute to increased stability, reduced deformation, and efficient load transfer, reinforcing the structural integrity of the columns. A detailed failure mechanism analysis is conducted to assess the impact of these reinforcements under varying conditions. The research findings provide valuable insights into optimizing design parameters for improved structural resilience, weight efficiency, and service life, offering engineers data-driven guidelines for safer and more efficient high-rise buildings and large-scale infrastructure projects.
1.1 Engineered Cementitious Composite (ECC) Engineered Cementitious Composite (ECC), often referred to as "bendable concrete," is a fibre-reinforced cementitious material known for its high ductility, crack control, and energy absorption properties. Unlike conventional concrete, which is brittle and prone to cracking, ECC forms multiple micro-cracks under stress, allowing it to maintain structural integrity even in extreme conditions. ECC is composed of cement, sand, water, chemical additives and microfibres that improve its tensile properties. These microfibres help bridge cracks and distribute stress efficiently, making ECC ideal for earthquake resistant structures, bridge decks, pavements, and high-durability infrastructure. The material's superior flexibility and longterm durability reduce maintenance costs and enhance sustainability in modern construction.
Key Words: ECC, UHPC, Double Steel Tubular Composite Columns, Axial Compression, Finite Element Modelling, Stiffeners, Load-Bearing Capacity, Deformation, Local Buckling, Structural Integrity. 1. INTRODUCTION The parametric analysis of Engineered Cementitious Composites (ECC) and Ultra-High-Performance Concrete (UHPC) filled double steel tubular composite columns is a
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